MAIFEST AT MAINSTRASSE http://www.covingtonky.com/index.asp?fn=news&id=1657 There will be merry-making in MainStrasse this weekend as Maifest kicks off the summer celebration season. The annual toast to early wines has grown in depth as new food vendors, performers and artisans expand visitor choices. "We've added approximately 30 new arts and crafts booths this year," said Donna